D-ring



FIG. 1 is a front perspective view of a D-ring, comprising the new design shown in a typical environment by broken lines for illustrative purposes;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image thereof;

FIG. 5 is a front elevation view thereof, the rear elevation view being a mirror image thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines shown in FIG. 1 are for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a D-ring, as shown and described. 